St Michael's Mount was awarded to the Benedictine abbey of Mont Saint-Michel after the Norman invasion (seems like a very long way to me...). The original church was destroyed by earthquake in the 13th century and the current church was built in the late 14th.
The estate is currently in the hands of the St Aubyn family, having been bought by John St Aubyn in 1659.
On this view of the harbour you can still see the causeway under the water
Inside the house
Door clock!
(can't actually remember what this thing is with the blue liquid. Something to do with water pressure?)
Outside the house
I still have more pictures to post (!) but I am tired so I am off to bed and will post part 3 tomorrow. :)